Pacquiao vs. Clottey at JerryWorld

Margarito lost his license to box in Nevada after he was caught last year with a hard substance in his gloves.

Ready to Rumble: The Weigh-In

But still, many fans and fighters seem in awe of Cowboys Stadium as a boxing venue.

"I didn't know how big it was until I got here," said world light welterweight champion Amir Khan, of Britain. "It's so big. And it's the name too -- Cowboys Stadium. I think this could be one of the big arenas in the world where big fights are going to happen. People always talk about Vegas. But maybe it could change and it could be Dallas now."

Saturday night's event is the second big bout at Cowboys Stadium. In March, Pacquiao defeated Joshua Clottey of Ghana in a unanimous decision before a crowd of more than 51,000.